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Bacteria

Bacteria are a large domain of single-celled, prokaryote microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals.

6,325 Questions
Science
Bacteria

What is the plural form of bacillus?

Bacilli

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Infectious Diseases
Microbiology
Bacteria

What would be the appearance of the gram positive bacterium if you forget to counterstain with safranin?

If you forget to counter stain color of Gram positive would be violet or blue .

The above answer is good. Here is why the above answer is good.

Yes it would still be Violet or blue. Gram positive bacteria are gram positive, because it holds onto the crystal violet stain that washes out of gram negative bacteria. Counterstaining with safranian turns gram negative bacteria pink to red only because the crystal violet has washed out of the gram negative. The lighter safranian has little to no effect on gram positive bacteria.

The cause of the difference has to do with the makeup of the cell wall in the different bacteria.

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Biology
Protists
Bacteria
Microscopes

How does staphylococcus move?

There are different types of staph infections the cause many illnesses. A mild case of the bacterial infection is passed along by personal contact causing skin infections. a more serious, but rare case, is when the bacteria enters the body through a break in the skin. It moves to the bloodstream infecting organs, joints or the nervous system.

Answer 2

Staphylococcus don't move as they lack flagella , they drift .

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Biology
Microbiology
Bacteria

How does heat affect the gram stain result?

In what regard? You need heat in order to heat fix the bacterial cells to the slide. This adheres cells to the slide. Otherwise, the bacterial cells would wash off the slide during the Gram staining process.

If you leave the slide in the Bunsen burner too long, then you can distort the bacterial cell shape and size and also have other artifacts appear on the slide that are not bacterial cells.

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Biology
Microbiology
Bacteria

Is bacteria a primary producer?

No, it's most likely a decomposer but cyanobacteria are primary producers as they possess chlorophyll .

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Microbiology
Botany or Plant Biology
Bacteria

How does bleach affect bacterial growth?

It totally abolishes it by killing the bacteria.

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Bacteria

What pathogen causes gonorrhea?

Gonorrhea is a contagious, purulent inflammation of the urethra or the vagina, caused by a bacterial pathogen called Neisseria gonorrhea. Neisseria is a diplococcus that likes mucus membranes. It wasn't until 1879 that gonorrhea was discovered by Albert Neisser.

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Microbiology
Bacteria

What are examples of ancient bacteria?

Thermoacidophile.

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Biology
Bacteria
Cell Biology (cytology)

What is the name for a cell without a nucleus?

Prokaryotic cells . RBC of mammals and Sieve tube cells of plants .

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Biology
Microbiology
Bacteria

Names of unicellular organisms?

Euglena , Paramecium , E. coli , Chlamydomonas , Trypanosoma , Plasmodium .

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Health
Sanitization and Germs
Bacteria

What is indirect contamination and give an example?

Indirect contamination is the opposite of direct of contamination which does not need to do direct contact to be contaminated. An example of this is a person with HIV/AIDS who shares needles with another person that has no HIV/AIDS. These two people did not have any direct contact with each other, but sharing needles with HIV/AIDS or any types of diseases is an example of indirect contamination which could lead the healthy person to also get the HIV/AIDS.

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Bacteria

Is bacillus stearothermophilus a thermophile?

Yes, it typically favors environments at about 60 degrees Celsius.

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Biology
Protists
Bacteria
Viruses (biological)

What enzyme protein is used to copy DNA?

The enzyme DNA polymerase is what facilitates the replication of DNA, however there are multiple enzymes that aid the process of DNA replication such as helicase, ligase, and exonuclease.

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Science
Bacteria

What does flagellum for bacteria do?

Flagella are small tails attached to cells, usually of single-celled organisms. They help, quite simply, with movement.

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Bacteria

Where are Mycoplasma found?

Mycoplasma are found most often on the surfaces of mucous membranes

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Biology
Chemistry
Bacteria

What does the nucleus do?

The nucleus stores the cell's DNA and RNA. It is the central brain system of the cell. It basically runs the cell's primary processes.

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Bacteria

What does affiliation mean in scientific abstracts?

It means "where the person in question works, teaches, or goes to school."

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Biology
Ecology and Bionomics
Bacteria

The most common living bacteria today are what?

it is the Bactria that changes shape

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Biology
Microbiology
Bacteria

How do you test for Enterococcus faecalis?

To diagnose Enterococcus faecalis:

(Facultative anaerobic)

First, do the Gram stain: Gram positive cocci in chains

catalase test: negative

PYR disc: positive

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Microbiology
Pneumonia
Bacteria

What is cell arrangement of klebsiella pneumonia?

single, pairs or short chains

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Bacteria

How does group B streptococcus infection present in mothers?

In women, GBS can cause vaginitis and urinary tract infections.

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Bacteria

Can mycoplasma reproduce?

Unlike viruses, mycoplasma can reproduce outside of living cells

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Bacteria

Is zest soap anti bacterial?

No it is not.

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Geology
Infectious Diseases
Microbiology
Bacteria

Endogenous infectious agents arise from microbes that are?

The patient's own normal flora

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Infectious Diseases
Microbiology
Bacteria

What bacteria or fungi will alcohol kill?

AnswerAlcohol (of at least a 60% solution) will kill all fungi, 99.9% of bacteria and many viruses, but does not kill spores. ANSWER:It doesn't kill as well as you would think it should on skin. It will however sweep it from one place on the skin to another. When you go to give blood, the nurse starts with an alcohol prep pad and makes a circle with it going outwards. This is because alcohol is not a sterilizer. Use Betadine on the skin or bleach on other surfaces to kill bacteria most effectively. If an item is immersed in alcohol, then it will kill most bacteria.
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